Buggy code:
public class TryStatement extends SubRoutineStatement { public Block tryBlock ; public Block [ ] catchBlocks ; public Argument [ ] catchArguments ; public Block finallyBlock ; BlockScope scope ; private boolean isSubRoutineEscaping = false ; public UnconditionalFlowInfo subRoutineInits ; ReferenceBinding [ ] caughtExceptionTypes ; boolean tryBlockExit ; boolean [ ] catchExits ; public int [ ] preserveExceptionHandler ; Label subRoutineStartLabel ; public LocalVariableBinding anyExceptionVariable ; public LocalVariableBinding returnAddressVariable ; public LocalVariableBinding secretReturnValue ; public static final char [ ] SecretReturnName = "<seq2seq4repair_space>returnAddress" . toCharArray ( ) ; public static final char [ ] SecretAnyHandlerName = "<seq2seq4repair_space>anyExceptionHandler" . toCharArray ( ) ; public static final char [ ] SecretLocalDeclarationName = "<seq2seq4repair_space>returnValue" . toCharArray ( ) ; int preTryInitStateIndex = - 1 ; int mergedInitStateIndex = - 1 ; public FlowInfo analyseCode ( BlockScope currentScope , FlowContext flowContext , FlowInfo flowInfo ) { } public boolean isSubRoutineEscaping ( ) { } public void generateCode ( BlockScope currentScope , CodeStream codeStream ) { if ( ( ( bits ) & ( IsReachableMASK ) ) == 0 ) { return ; } int pc = codeStream . position ; final int NO_FINALLY = 0 ; final int FINALLY_SUBROUTINE = 1 ; final int FINALLY_DOES_NOT_COMPLETE = 2 ; final int FINALLY_MUST_BE_INLINED = 3 ; int finallyMode ; if ( ( subRoutineStartLabel ) == null ) { finallyMode = NO_FINALLY ; } else { if ( this . isSubRoutineEscaping ) { finallyMode = FINALLY_DOES_NOT_COMPLETE ; } else if ( scope . environment ( ) . options . inlineJsrBytecode ) { finallyMode = FINALLY_MUST_BE_INLINED ; } else { finallyMode = FINALLY_SUBROUTINE ; } } boolean requiresNaturalExit = false ; int maxCatches ; ExceptionLabel [ ] exceptionLabels = new ExceptionLabel [ maxCatches = ( ( catchArguments ) == null ) ? 0 : catchArguments . length ] ; for ( int i = 0 ; i < maxCatches ; i ++ ) { exceptionLabels [ i ] = new ExceptionLabel ( codeStream , catchArguments [ i ] . binding . type ) ; } if ( ( subRoutineStartLabel ) != null ) { <START_BUG> subRoutineStartLabel . codeStream = codeStream ; <END_BUG> this . enterAnyExceptionHandler ( codeStream ) ; } tryBlock . generateCode ( scope , codeStream ) ; boolean tryBlockHasSomeCode = ( codeStream . position ) != pc ; if ( tryBlockHasSomeCode ) { Label naturalExitLabel = new Label ( codeStream ) ; if ( ! ( tryBlockExit ) ) { int position = codeStream . position ; switch ( finallyMode ) { case FINALLY_SUBROUTINE : case FINALLY_MUST_BE_INLINED : requiresNaturalExit = true ; case NO_FINALLY : codeStream . goto_ ( naturalExitLabel ) ; break ; case FINALLY_DOES_NOT_COMPLETE : codeStream . goto_ ( subRoutineStartLabel ) ; break ; } codeStream . updateLastRecordedEndPC ( position ) ; } for ( int i = 0 ; i < maxCatches ; i ++ ) { exceptionLabels [ i ] . placeEnd ( ) ; } if ( ( catchArguments ) == null ) { this . exitAnyExceptionHandler ( ) ; } else { for ( int i = 0 ; i < maxCatches ; i ++ ) { if ( ( preTryInitStateIndex ) != ( - 1 ) ) { codeStream . removeNotDefinitelyAssignedVariables ( currentScope , preTryInitStateIndex ) ; } exceptionLabels [ i ] . place ( ) ; codeStream . incrStackSize ( 1 ) ; LocalVariableBinding catchVar ; int varPC = codeStream . position ; if ( ( ( catchVar = catchArguments [ i ] . binding ) . resolvedPosition ) != ( - 1 ) ) { codeStream . store ( catchVar , false ) ; catchVar . recordInitializationStartPC ( codeStream . position ) ; codeStream . addVisibleLocalVariable ( catchVar ) ; } else { codeStream . pop ( ) ; } codeStream . recordPositionsFrom ( varPC , catchArguments [ i ] . sourceStart ) ; catchBlocks [ i ] . generateCode ( scope , codeStream ) ; if ( i == ( maxCatches - 1 ) ) { this . exitAnyExceptionHandler ( ) ; } if ( ! ( catchExits [ i ] ) ) { switch ( finallyMode ) { case FINALLY_SUBROUTINE : case FINALLY_MUST_BE_INLINED : requiresNaturalExit = true ; case NO_FINALLY : codeStream . goto_ ( naturalExitLabel ) ; break ; case FINALLY_DOES_NOT_COMPLETE : codeStream . goto_ ( subRoutineStartLabel ) ; break ; } } } } ExceptionLabel naturalExitExceptionHandler = ( ( finallyMode == FINALLY_SUBROUTINE ) && requiresNaturalExit ) ? this . enterAnyExceptionHandler ( codeStream ) : null ; int finallySequenceStartPC = codeStream . position ; if ( ( subRoutineStartLabel ) != null ) { this . placeAllAnyExceptionHandlers ( ) ; if ( ( preTryInitStateIndex ) != ( - 1 ) ) { codeStream . removeNotDefinitelyAssignedVariables ( currentScope , preTryInitStateIndex ) ; } codeStream . incrStackSize ( 1 ) ; switch ( finallyMode ) { case FINALLY_SUBROUTINE : codeStream . store ( anyExceptionVariable , false ) ; codeStream . jsr ( subRoutineStartLabel ) ; codeStream . load ( anyExceptionVariable ) ; codeStream . athrow ( ) ; subRoutineStartLabel . place ( ) ; codeStream . incrStackSize ( 1 ) ; codeStream . store ( returnAddressVariable , false ) ; codeStream . recordPositionsFrom ( finallySequenceStartPC , finallyBlock . sourceStart ) ; finallyBlock . generateCode ( scope , codeStream ) ; int position = codeStream . position ; codeStream . ret ( returnAddressVariable . resolvedPosition ) ; codeStream . updateLastRecordedEndPC ( position ) ; codeStream . recordPositionsFrom ( position , finallyBlock . sourceEnd ) ; break ; case FINALLY_MUST_BE_INLINED : codeStream . store ( anyExceptionVariable , false ) ; this . finallyBlock . generateCode ( currentScope , codeStream ) ; codeStream . load ( anyExceptionVariable ) ; codeStream . athrow ( ) ; subRoutineStartLabel . place ( ) ; codeStream . recordPositionsFrom ( finallySequenceStartPC , finallyBlock . sourceStart ) ; break ; case FINALLY_DOES_NOT_COMPLETE : codeStream . pop ( ) ; subRoutineStartLabel . place ( ) ; codeStream . recordPositionsFrom ( finallySequenceStartPC , finallyBlock . sourceStart ) ; finallyBlock . generateCode ( scope , codeStream ) ; break ;

Fix:
subRoutineStartLabel . initialize ( codeStream ) ;